Rutile u pb dating
The paper presents the results of isotope-geochemical studies of rutile from four samples selected only within the southern section of the Ichetju ore occurrence along a 3 km meridional line between the extreme sampling points: UM-212 - river Umba, right bank, the Bolshoy quarry; MU-08/7 - river Umba, left bank, quarry K-150; MU-08/4 - river Umba, left bank, near the ditch KU-1; SM-215 - river Srednjaya, right bank, quarry K-100.
The thickness of the ore-bearing layer at the sampling points is 40, 30, 30, and 150 cm, respectively.
It was established that rutile originates from various sources with different ages (presumably, ca. Along with zircon, known as a universal geochronometer, rutile is widely used for these purposes [9, 12, 17, 21, etc.].
RIZVANOVA1, Ellen KOOIJMAN3 1 Institute of Precambrian Geology and Geochronology RAS, Saint-Petersburg, Russia 2 Institute of Geology of Ore Deposits, Petrology, Mineralogy and Geochemistry RAS, Moscow, Russia 3 Department of Geosciences, the Vegacenter, Swedish Museum of Natural History, Stockholm, Sweden A study on the U-Pb age of rutile from the Ichetju polymineral occurrence has been done for the first time by LA-ICP-MS and TIMS methods. A complex approach, including the usage of a number of mineral-geochronometers (for example, ) is used in the complicated procedure of mineralization and hydrothermal process dating.
Key words: rutile; U-Pb dating; TIMS, LA-ICP-MS; Ichetju occurrence; the Middle Timan How to cite this article: Skublov S. The Ichetju rocks show a variety of mineral composition.
Despite the fact that both deposits over the past years are the subject of the geological survey and assessment, as well as various, mainly technological, mineralogical and geochemical studies, the questions of the mineralization genesis and the age are still open [2, 6, 7, etc.]. In situ LA-ICP-MS investigation of the geochemistry and U-Pb age of rutile from the rocks of the Belomorian mobile belt.
Wodgina allows SHRIMP Pb-U calibration with a precision of 3.5-5.5% (2σ).
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UDC 550.42 THE FIRST DATA ON THE U-PB AGE (TIMS AND LA-ICP-MS) OF RUTILE FROM THE ICHETJU POLYMINERAL OCCURRENCE, THE MIDDLE TIMAN Sergei G. 1000, 1660, 18 Ma), but all the rutile types have undergone a common thermal event at ca. Obtained results are consistent with U-Pb zircon data for the Ichetju occurrence and the Pizhemskoe deposit. The First Data on the U-Pb Age (TIMS and LA-ICP-MS) of Rutile From the Ichetju Polymineral Occurrence, the Middle Timan. In the present work, the first U-Pb dating results of the rutile from the polymineral ore deposit Ichetju (the Middle Timan) are given. The polymineral diamond-gold-rare metal-rare-earth-titanium ore occurrence Ichetju is a conglobreccia horizon with a complex spot, striated and lenticular morphology and sustained thickness from 0.2 to 1.5 m.
The resultant ages were compared with previous U-Pb zircon and monazite age determinations and new mica (muscovite, phlogopite, and biotite) Rb-Sr ages from the same metamorphic terrane. 139, 198-207], versus 400 °C [Mezger, K., Hanson G.